25952447 has 4 divisors (see below), whose sum is σ = 26220096. Its totient is φ = 25684800.

The previous prime is 25952431. The next prime is 25952453. The reversal of 25952447 is 74425952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25952447 - 2⁴ = 25952431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25952447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25952497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133679 + ... + 133872.

It is an arithmetic number, because the mean of its divisors is an integer number (6555024).

Almost surely, 2^25952447 is an apocalyptic number.

25952447 is a deficient number, since it is larger than the sum of its proper divisors (267649).

25952447 is an equidigital number, since it uses as much as digits as its factorization.

25952447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267648.

The product of its digits is 100800, while the sum is 38.

The square root of 25952447 is about 5094.3544242622. The cubic root of 25952447 is about 296.0688869071.

The spelling of 25952447 in words is "twenty-five million, nine hundred fifty-two thousand, four hundred forty-seven".